When you attempt to restore a custom IPSW created by tools like or PwnageTool , iTunes often blocks the process because the firmware is unsigned or modified. iREB works by putting the device into a "Pwned DFU" state. It achieves this by uploading three specific patched files to the device’s memory, which "tricks" iTunes into accepting the custom firmware without triggering 16xx-series errors. Using iREB 4.0.x 4.1 RC2 To use this tool effectively, follow these general steps:
The file refers to a legacy iOS utility developed by iH8sn0w . iREB (iTunes Restore Error Bypasser) is a specialized tool used to put older iPhone, iPad, and iPod touch devices into a "pwned" DFU (Device Firmware Upgrade) state. Primary Function iREB 4.0.x 4.1 RC2.zip 1
The 4.0.x / 4.1 RC2 release was particularly significant because it introduced stable support for iOS 4.1, a popular version for legacy iPhone and iPod touch models. When you attempt to restore a custom IPSW
: Once iREB finished, the device’s screen would remain black, but it was now in a Pwned DFU mode . Using iREB 4
iREB 4.0.x-4.1-RC2 a legacy utility developed by designed to bypass specific iTunes errors (primarily
Once the screen is black (or white, depending on the exploit), iTunes can be used to "Shift+Restore" (Windows) or "Option+Restore" (Mac) to a custom IPSW file without encountering error 16xx.